srkukarni commented on a change in pull request #7509:
URL: https://github.com/apache/pulsar/pull/7509#discussion_r453337435
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File path:
pulsar-functions/worker/src/main/java/org/apache/pulsar/functions/worker/rest/api/FunctionsImpl.java
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@@ -686,10 +686,33 @@ public void updateFunctionOnWorkerLeader(final String
tenant,
}
// Redirect if we are not the leader
+ boolean shouldRedirect = false;
if (!worker().getLeaderService().isLeader()) {
WorkerInfo workerInfo =
worker().getMembershipManager().getLeader();
- URI redirect =
UriBuilder.fromUri(uri).host(workerInfo.getWorkerHostname()).port(workerInfo.getPort()).build();
- throw new
WebApplicationException(Response.temporaryRedirect(redirect).build());
+ // there might be a delay between when the leader service for this
worker gets triggered "becomeActive"
Review comment:
I think we should adopt more simple workflow.
1. LeaderService.isLeader() is set only after we have fully become leader.
2. If we are leader, do the request ourselves
3. else re-direct to the leader
There will be a case that we might redirect to a leader who is not ready. In
that case just return error to the user asking him to retry again is perfectly
valid.
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